src/devices/generic_remote.c

   1 /* Generic remotes and sensors using PT2260/PT2262 SC2260/SC2262 EV1527 protocol
   2  *
   3  * Tested devices:
   4  * SC2260
   5  * EV1527
   6  *
   7  * Copyright (C) 2015 Tommy Vestermark
   8  * Copyright (C) 2015 nebman
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  */
  14 #include "rtl_433.h"
  15 #include "pulse_demod.h"
  16 #include "data.h"
  17 #include "util.h"
  18
  19 static int generic_remote_callback(bitbuffer_t *bitbuffer) {
  20         bitrow_t *bb = bitbuffer->bb;
  21         uint8_t *b = bb[0];
  22         data_t *data;
  23         char time_str[LOCAL_TIME_BUFLEN];
  24         char tristate[23];
  25         char *p = tristate;
  26
  27         //invert bits, short pulse is 0, long pulse is 1
  28         b[0] = ~b[0];
  29         b[1] = ~b[1];
  30         b[2] = ~b[2];
  31
  32         unsigned bits = bitbuffer->bits_per_row[0];
  33
  34         // Validate package
  35         if ((bits == 25)
  36          && (b[3] & 0x80)       // Last bit (MSB here) is always 1
  37          && (b[0] || b[1])      // Reduce false positives. ID 0x0000 not supported
  38          && (b[2])      // Reduce false positives. CMD 0x00 not supported
  39         ) {
  40
  41                 uint32_t ID_16b = b[0] << 8 | b[1];
  42                 unsigned char CMD_8b = b[2];
  43
  44 //              fprintf(stdout, "Generic remote keypress / sensor\n");
  45 //              fprintf(stdout, "ID 16bit = 0x%04X\n", ID_16b);
  46 //              fprintf(stdout, "CMD 8bit = 0x%02X\n", CMD_8b);
  47
  48
  49                 // output tristate coding
  50
  51                 uint32_t FULL = b[0] << 16 | b[1] << 8 | b[2];
  52                 char c;
  53
  54 //              fprintf(stdout, "TRISTATE = ");
  55                 for (signed char i=22; i>=0; i-=2) {
  56
  57                         switch ((FULL>>i) & 0x03) {
  58                                 case 0x00:      c = '0'; break;
  59                                 case 0x01:      c = 'F'; break;
  60                                 case 0x02:      c = '!'; break; // tristate 10 is invalid code for SC226x but valid in EV1527
  61                                 case 0x03:      c = '1'; break;
  62                                 default:        c = '?'; break; // not possible anyway
  63                         }
  64                         *p++=c;
  65                         *p = '\0';
  66
  67
  68                         //fputc(c, stdout);
  69                 }
  70 //              fprintf(stdout, "\n");
  71                 local_time_str(0, time_str);
  72
  73 //              fprintf(stdout, "ID 16bit = 0x%04X\n", ID_16b);
  74 //              fprintf(stdout, "CMD 8bit = 0x%02X\n", CMD_8b);
  75
  76                 data = data_make(
  77                         "time",         "",             DATA_STRING, time_str,
  78                         "model",        "",             DATA_STRING, "Generic Remote",
  79                         "id",           "House Code",   DATA_INT, ID_16b,
  80                         "cmd",          "Command",      DATA_INT, CMD_8b,
  81                         "tristate",     "Tri-State",    DATA_STRING, tristate,
  82                       NULL);
  83
  84                 data_acquired_handler(data);
  85
  86
  87                 return 1;
  88         }
  89         return 0;
  90 }
  91
  92
  93 PWM_Precise_Parameters pwm_precise_parameters_generic = {
  94         .pulse_tolerance        = 50,
  95         .pulse_sync_width       = 0,    // No sync bit used
  96 };
  97
  98 r_device generic_remote = {
  99         .name                   = "Generic Remote SC226x EV1527",
 100         .modulation             = OOK_PULSE_PWM_PRECISE,
 101         .short_limit    = 464,
 102         .long_limit             = 1404,
 103         .reset_limit    = 1800,
 104         .json_callback  = &generic_remote_callback,
 105         .disabled               = 0,
 106         .demod_arg              = (uintptr_t)&pwm_precise_parameters_generic,
 107 };